1. Department of Anatomy, Histology and Physiology; University of Veterinary Medicine and Pharmacy in Košice; Košice Slovak Republic
2. Department of Epizootology and Preventive Veterinary Medicine; University of Veterinary Medicine and Pharmacy in Košice; Košice Slovak Republic
3. Department of Microbiology and Immunology; University of Veterinary Medicine and Pharmacy in Košice; Košice Slovak Republic